The conditions were dry and clear. Can a yellow speed sign be enforced? I was speeding up to merge onto Pena and the speed limit is 65. I was sited for 65 and the yellow sign read 50.
Yes, the yellow sign can be enforced. Under Colorado law "(3) No driver of a vehicle shall fail to decrease the speed of such vehicle from an otherwise lawful speed to a reasonable and prudent speed when a special hazard exists with respect to pedestrians or other traffic or by reason of weather or highway conditions. C.R.S. 42-4-1101" The yellow sign is an "Advisory Speed Sign" which indicated the safe speed around curves, corners and off-ramps.
However, the purpose of the "on-ramp" is to accelerate to highway speed, which means matching the speed of the other highway traffic. It may be possible to challenge the ticket on this ground.
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